Wow, busy thread I should jump in. Just checked the pool 1:30pm Pacific time here in Las Vegas. Temp is 86 in th efist foot, I reached in farther and it seemed the same, pump starts up circulation around 10:30am. I have one of those blue bubble covers from Leslie's weve keept it on for the past month and it's making a difference, Our lows are still in the 50's overnight soo now the cover is helping to keep the heat in from the cool nights. :-D I'm also experimenting with One Saturn solar pool heater (200 ft. of 1/2" black irrigation pipe in a spiral) some water from the main return diverts to a garden hose to the heater then to a "dip" tube to feed the warm water to the bottom of the shallow end :-D